ASP.NET Core Pages: Partials

Question

Is there a way to re-render a partial from a PageModel?

@foreach (var group in Model.Groups)
{
    <partial name="_OverviewAction" model="@group" />
}

The following function should replace the partial with a new one.

But this won't work because the Partial() only accepts a model from the same type as the PageModel.

public IActionResult OnPostDeleteGroup(string id)
{
    var group = GroupService.GetGroup(id);

    /*... some code ...*/

    return Partial("_OverviewAction", group);
}

Do you mean re-useable or portable?

Payam Khaninejad
– Payam Khaninejad

2019-03-07 07:24:55 +00:00
Commented Mar 7, 2019 at 7:24 — Payam Khaninejad
– Payam Khaninejad, Commented Mar 7, 2019 at 7:24

Mike Brind · Accepted Answer · 2019-03-07 07:28:22Z

2

When the Partial helper method was introduced in 2.2, I believe that the intention was to allow you to pass in any model, but the actual implementation seems buggy (or to behave differently to expectations). So you can fall back on the way to call partials that works in 2.1:

return new PartialViewResult {
        ViewName = "_OverviewAction",
        ViewData = new ViewDataDictionary<data type for the group variable goes here>(ViewData, group)
    };

answered Mar 7, 2019 at 7:28

Mike Brind

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